[rules-users] Newbie on drools and servlets

[kuena]

Hi,
I know a question has been asked before about drools and servlets, so I
apologise in advance. May someone please advice me on the best way of making
Drools and servlets friends in my application ;-) I want to use drools to
re-implement the servlet shown below.  I have also attached the flow.   

In brief my scenario works as follows:
User submits  a form to request info; result map is returned; if size >3
refine else return  results.  Refine will require a page to be generated
asking user how to refine. The user answer will then be used to generate
result.

I have a feeling I might just need to add another node (e.g. event wait or
human task) between the refine action and the rule flow group node. Would
want to avoid that but not sure how will resume flow after refine. I would
be grateful for any pointers. 

http://n3.nabble.com/forum/FileDownload.jtp?type=n&id=742273&name=flow.png 

public class GeneratorServlet extends HttpServlet {    
    //declarations

    protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
    throws ServletException, IOException {
        //declarations

        if(request.getAttribute("resultsMap") != null){ 
               map = (Map) request.getAttribute("resultsMap");
                //Render results i.e. present results to user if list is
short
               if(map.size() <= maxOutput){                 
                htmlPage.render(map, out, templatePath);
                }
                //list is long, ask  how to shorten the list
                else if (map.size() > maxOutput){
                 dialogSession.setAttribute("storedResultsMap", map);
                 htmlPage.refine(map, out, templatePath);
                }            
        }
       else{ // resultsMap is null
              if(dialogSession.getAttribute("storedResultsMap")!= null){
                  map = (Map)
dialogSession.getAttribute("storedResultsMap");
                  String criteriaSelection =
request.getParameter("refineChoice");

                    if(criteriaSelection.equalsIgnoreCase("choice1")){                     
                     htmlPage.render(choice1Map, out, templatePath);
                    }
                    else if(criteriaSelection.equalsIgnoreCase("choice2")){                   
                     htmlPage.render(choice2Map, out, templatePath);
                   }                    
                   else {                      
                      htmlPage.render(map, out, templatePath);
                    }
            }
       }
    }

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